HTML
HTML+
HTML 2.0
HTML 3.2
HTML 4.01
XHTML
HTML5
HTML-1991
The first publicly offered a description of hypertext markup language was a document known as "HTML Tags", 1st mentioned on the web by Berners-Lee in late 1991. It describes eighteen components comprising the initial, comparatively easy style of hypertext mark-up language.
HTML+ 1993
"HTML+ (Hypertext Markup Format)", from late 1993, suggested standardizing already-implemented features like tables and fill-out forms.
HTML 2.0 1995
HTML 2.0 was printed as IETF RFC 1866. Supplemental RFCs additional capabilities.
HTML 3.2 1997-January
HTML 4.01 1999-December
XHTML 2000-January 26
HTML5 2012-